Blood does not buy goodwill: allowing culling increases poaching of a large carnivore.

摘要: Quantifying environmental crime and the effectiveness of policy interventions is difficult because perpetrators typically conceal evidence. To prevent illegal uses natural resources, such as poaching endangered species, governments have advocated granting flexibility to local authorities by liberalizing culling or hunting large carnivores. We present first quantitative evaluation hypothesis that will reduce improvepopulation statusofanendangeredcarnivore.Weshowthatallowing wolf (Canis lupus) was substantially more likely increase than it. Replicated, quasi-experimental changes in policies Wisconsin Michigan, USA, revealed a repeated signal allow state triggered slowdowns population growth, irrespective implementation measured number wolves killed. The most explanation for these poach